Mexican Jalisco Rainbow Obsidian Rough Chunk Lapidary Stone Magnetite Morrisonite Jasper It can occasionally have fractures

It can occasionally have fractures

but any rough on the market is generally going to be old stock material

and you may receive some like that

and with Polychrome

as the obsidian between is frequently pure and almost entirely see-through when held to light or cut thin enough

Mexican Jalisco Rainbow Obsidian Rough Chunk Lapidary Stone Magnetite Morrisonite Jasper It can occasionally have fracturesMexican Rainbow Obsidian is also known as Jalisco Obsidian. It tends to be a pretty pure form of Obsidian, with high flash and bright colors. Typical chunks of Jalisco Obsidian normally have only one color of flash, though under rare circumstances, there can be multiple colors present. Unlike Velvet Obsidian, the magnetite in Rainbow Obsidian generally only flows in one direction, which creates the effect you see. Rainbow Obsidian does only flash